Jess

Jess works alongside Eve in the world of British intelligence, a sharp, capable colleague who gets pulled into the same orbit of surveillance and bureaucracy that Eve inhabits. She is measured and observant, someone who does her job well without needing to be the centre of it, watching events unfold with quiet, practical attention.

Nina Sosanya gives Jess a grounded, unshowy competence that steadies the show's more heightened, stylised energy. She plays the ordinary colleague with real interiority rather than filler, so that her presence feels like a window onto the mundane machinery behind Eve's extraordinary obsession — dry, alert, and entirely believable.